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Author Takesue, Hiroki; Nam, Sae Woo; Zhang, Qiang; Hadfield, Robert H.; Honjo, Toshimori; Tamaki, Kiyoshi; Yamamoto, Yoshihisa doi  openurl
  Title Quantum key distribution over a 40-dB channel loss using superconducting single-photon detectors Type Journal Article
  Year 2007 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 1 Issue (up) Pages 343-348  
  Keywords quantum cryptography, SSPD, QKD, DSP  
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  Notes Approved no  
  Call Number RPLAB @ akorneev @ Serial 609  
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Author Kosako, Terukazu; Kadoya, Yutaka; Hofmann, Holger F. openurl 
  Title Directional control of light by a nano-optical Yagi–Uda antenna Type Journal Article
  Year 2010 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 4 Issue (up) Pages 312 - 315  
  Keywords optical antennas  
  Abstract The plasmon resonance of metal nanoparticles can direct light from optical emitters in much the same way that radiofrequency antennas direct the emission from electrical circuits. Recently, rapid progress has been made in the realization of single-element antennas for optical waves. Because most of these devices are designed to optimize the local near-field coupling between the antenna and an emitter, the possibility of modifying the spatial radiation pattern has not yet received as much attention. In the radiofrequency regime, a typical antenna design for high directivity is the Yagi–Uda antenna, which essentially consists of a one-dimensional array of antenna elements driven by a single feed element. By fabricating a corresponding array of nanoparticles, similar radiation patterns can be obtained in the optical regime. Here, we present the experimental demonstration of directional control of radiation from a nano-optical Yagi–Uda antenna composed of appropriately tuned gold nanorods.  
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  Call Number RPLAB @ gujma @ Serial 747  
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Author Kono, Junichiro openurl 
  Title Coherent terahertz control Type Journal Article
  Year 2011 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 5 Issue (up) Pages 5-6  
  Keywords fromIPMRAS  
  Abstract Spin and charge terahertz excitations in solids are promising for implementing future technologies such as spintronics and quantum computation, but coherently controlling them has been a significant challenge. Researchers have now manipulated coherent spin waves in an antiferromagnet using the intense magnetic field of ultrashort terahertz pulses.  
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  Call Number RPLAB @ gujma @ Serial 773  
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Author Paiella, Roberto openurl 
  Title Terahertz quantum cascade lasers: Going ultrafast Type Journal Article
  Year 2011 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 5 Issue (up) Pages 253–255  
  Keywords fromIPMRAS  
  Abstract A new asynchronous coherent optical sampling method allows for the direct visualization of actively mode-locked quantum cascade laser pulses at terahertz wavelengths.  
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  Call Number RPLAB @ gujma @ Serial 774  
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Author Santori, Charles; Beausoleil, Raymond G. openurl 
  Title Quantum memory: Phonons in diamond crystals Type Journal Article
  Year 2012 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 6 Issue (up) Pages 10-12  
  Keywords fromIPMRAS  
  Abstract The demonstration that quantum information can be stored in a bulk-diamond crystal in the form of an optically excited phonon gives researchers a new type of mechanical solid-state quantum memory to explore.  
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  Notes Approved no  
  Call Number RPLAB @ gujma @ Serial 781  
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Author Xu, XinAn; Wong, Chee Wei openurl 
  Title Quantum optics: Correlations on a chip Type Journal Article
  Year 2012 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 6 Issue (up) Pages 75-76  
  Keywords fromIPMRAS  
  Abstract Researchers have developed a semiconductor structure capable of supporting quantum correlations between photons and strong single-photon nonlinearities, thus paving the way for the development of chip-based devices for quantum secure communications and quantum information processing.  
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  Call Number RPLAB @ gujma @ Serial 782  
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Author Hase, Muneaki; Katsuragawa, Masayuki; Constantinescu, Anca Monia; Petek, Hrvoje openurl 
  Title Frequency comb generation at terahertz frequencies by coherent phonon excitation in silicon Type Journal Article
  Year 2012 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 6 Issue (up) Pages 243–247  
  Keywords fromIPMRAS  
  Abstract High-order nonlinear light–matter interactions in gases enable the generation of X-ray and attosecond light pulses, metrology and spectroscopy1. Optical nonlinearities in solid-state materials are particularly interesting for combining optical and electronic functions for high-bandwidth information processing2. Third-order nonlinear optical processes in silicon have been used to process optical signals with bandwidths greater than 1 GHz (ref. 2). However, fundamental physical processes for a silicon-based optical modulator in the terahertz bandwidth range have not yet been explored. Here, we demonstrate ultrafast phononic modulation of the optical index of silicon by irradiation with intense few-cycle femtosecond pulses. The anisotropic reflectivity modulation by the resonant Raman susceptibility at the fundamental frequency of the longitudinal optical phonon of silicon (15.6 THz) generates a frequency comb up to seventh order. All-optical >100 THz frequency comb generation is realized by harnessing the coherent atomic motion of the silicon crystalline lattice at its highest mechanical frequency.  
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  Call Number RPLAB @ gujma @ Serial 794  
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Author Gao, Jie; McMillan, James F.; Wong, Chee Wei openurl 
  Title Nanophotonics: Remote on-chip coupling Type Journal Article
  Year 2012 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 6 Issue (up) 1 Pages 7-8  
  Keywords fromIPMRAS  
  Abstract Scientists have demonstrated strongly coupled photon states between two distant high-Q photonic crystal cavities connected by a photonic crystal waveguide. Remote dynamic control over the coupled states could aid the development of delay lines, optical buffers and qubit operations in both classical and quantum information processing.  
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  Call Number RPLAB @ gujma @ Serial 779  
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Author Pile, David openurl 
  Title How many bits can a photon carry Type Journal Article
  Year 2012 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 6 Issue (up) 1 Pages 14-15  
  Keywords fromIPMRAS  
  Abstract Quantum physics offers a way to enhance the amount of information a photon can carry, with potential applications in optical communication, lithography, metrology and imaging.  
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  Notes View from... OSA Frontiers in Optics 2011: How many bits can a photon carry? Approved no  
  Call Number RPLAB @ gujma @ Serial 780  
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Author Lydersen, Lars; Wiechers, Carlos; Wittmann, Christoffer; Elser, Dominique; Skaar, Johannes; Makarov, Vadim openurl 
  Title Hacking commercial quantum cryptography systems by tailored bright illumination Type Journal Article
  Year 2010 Publication Nature Photonics Abbreviated Journal Nat. Photon.  
  Volume 4 Issue (up) 10 Pages 686 - 689  
  Keywords quantum cryptography, hacking, QKD, APD  
  Abstract The peculiar properties of quantum mechanics allow two remote parties to communicate a private, secret key, which is protected from eavesdropping by the laws of physics. So-called quantum key distribution (QKD) implementations always rely on detectors to measure the relevant quantum property of single photons. Here we demonstrate experimentally that the detectors in two commercially available QKD systems can be fully remote-controlled using specially tailored bright illumination. This makes it possible to tracelessly acquire the full secret key; we propose an eavesdropping apparatus built of off-the-shelf components. The loophole is likely to be present in most QKD systems using avalanche photodiodes to detect single photons. We believe that our findings are crucial for strengthening the security of practical QKD, by identifying and patching technological deficiencies.  
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  Notes Approved no  
  Call Number RPLAB @ gujma @ Serial 657  
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